{"id":30901,"date":"2023-10-24T15:25:25","date_gmt":"2023-03-13T22:04:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8php%e4%b8%ad%e6%9c%89%e4%b8%80%e4%b8%aa%e5%90%8d%e4%b8%bafloor%e7%9a%84%e9%99%b7%e9%98%b1%e3%80%82\/"},"modified":"2025-08-12T21:18:30","modified_gmt":"2025-08-12T13:18:30","slug":"%e5%9c%a8php%e4%b8%ad%e6%9c%89%e4%b8%80%e4%b8%aa%e5%90%8d%e4%b8%bafloor%e7%9a%84%e9%99%b7%e9%98%b1%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8php%e4%b8%ad%e6%9c%89%e4%b8%80%e4%b8%aa%e5%90%8d%e4%b8%bafloor%e7%9a%84%e9%99%b7%e9%98%b1%e3%80%82\/","title":{"rendered":"\u5728PHP\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3afloor()\u7684\u9677\u9631"},"content":{"rendered":"<p>\u6211\u5728AGC019\u7684A\u9898\u4e0a\u5931\u8d25\u4e86\u3002<\/p>\n<p>\u4f5c\u4e3a\u95ee\u9898\uff0c<\/p>\n<pre class=\"post-pre\"><code>0.25\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fQ\u5186\u3001\r\n0.5\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fH\u5186\u3001\r\n1\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fS\u5186\u3001\r\n2\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fD\u5186\u3002\r\n\r\n\u3074\u3063\u305f\u308aN\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u304c\u6b32\u3057\u3044\u5834\u5408\u3001\r\n\u4e00\u756a\u5b89\u3044\u7d44\u307f\u5408\u308f\u305b\u3067\u8cb7\u3063\u305f\u3089\u3044\u304f\u3089\u306b\u306a\u308a\u307e\u3059\u304b\uff1f\uff08\u610f\u8a33\uff09\r\n\u305f\u3060\u3057\u3001Q\u3001H\u3001S\u3001D\u3001N\u306f\u3059\u3079\u3066\u6574\u6570\u3068\u3059\u308b\u3002\r\n<\/code><\/pre>\n<p>\u9019\u662f\u4e00\u4ef6\u4e8b\u60c5\u3002<\/p>\n<p>\u4ee5N\u4e3a\u6574\u6570\uff0c\u6211\u4eec\u5c06\u8ba1\u7b97\u51fa\u6700\u4fbf\u5b9c\u76841\u5347\u7269\u54c1\u3002\u5177\u4f53\u6765\u8bf4\uff1a<\/p>\n<pre class=\"post-pre\"><code>LITTER_1 = min(Q * 4, H * 2, S)\r\n<\/code><\/pre>\n<p>\u8fd9\u6837\u5b50\u5566\u3002<br \/>\n\u7136\u540e\uff0c\u63a5\u4e0b\u6765\u662f\u8981\u6bd4\u8f832\u5347\u548c1\u5347\u7684\u5355\u4f4d\u4ef7\u683c\u6765\u8fdb\u884c\u8ba1\u7b97\u7684\uff0c\u5c31\u662f\u8fd9\u4e2a\u6d41\u7a0b\u3002<\/p>\n<p>\u5176\u4e2d\uff0c\u4e0d\u77e5\u4f55\u6545\u4e0d\u80fd\u6b63\u5e38\u8fd0\u884c\u7684\u4ee3\u7801\u90e8\u5206\u7684\u8282\u9009\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"nv\">$litter1<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">99999995<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$litter2<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">99999997<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$question<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">999999999<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/ 1\u30ea\u30c3\u30bf\u30fc\u304c2\u3064\u306e\u65b9\u304c\u9ad8\u304f\u3064\u304f\u5834\u5408<\/span>\r\n<span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$litter1<\/span> <span class=\"o\">*<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">&gt;<\/span> <span class=\"nv\">$litter2<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u554f\u984c\u304c\u5076\u6570\u306e\u5834\u5408<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$question<\/span> <span class=\"o\">%<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">==<\/span> <span class=\"mi\">0<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$question<\/span> <span class=\"o\">\/<\/span> <span class=\"mi\">2<\/span> <span class=\"o\">*<\/span> <span class=\"nv\">$litter2<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nb\">floor<\/span><span class=\"p\">(<\/span><span class=\"nv\">$question<\/span> <span class=\"o\">\/<\/span> <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"o\">*<\/span> <span class=\"nv\">$litter2<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$litter1<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$question<\/span> <span class=\"o\">*<\/span> <span class=\"nv\">$litter1<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u4f46\u662f\u6b63\u786e\u7b54\u6848\u662f49999998499999998\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d098e37434c4406be2583\/10-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u5f53\u6211\u8bd5\u7740\u6267\u884c\u65f6\uff0c\u611f\u89c9\u6709\u70b9\u504f\u5dee\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d098e37434c4406be2583\/12-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u4e3a\u4ec0\u4e48\u5462\uff1f\u601d\u8003\u7740\uff0c\u4ed4\u7ec6\u89c2\u5bdf\u540e\uff0c\u6211\u611f\u5230\u60ca\u8bb6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$step1<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">floor<\/span><span class=\"p\">(<\/span><span class=\"nv\">$question<\/span> <span class=\"o\">\/<\/span> <span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"[1]%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$step1<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"[2]%s<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nb\">gettype<\/span><span class=\"p\">(<\/span><span class=\"nv\">$step1<\/span><span class=\"p\">));<\/span>\r\n<span class=\"nv\">$step2<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$step1<\/span> <span class=\"o\">*<\/span> <span class=\"nv\">$litter2<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"[3]%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$step2<\/span><span class=\"p\">);<\/span>\r\n<span class=\"nb\">printf<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"%d<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nb\">floor<\/span><span class=\"p\">(<\/span><span class=\"nv\">$question<\/span> <span class=\"o\">\/<\/span> <span class=\"mi\">2<\/span><span class=\"p\">)<\/span> <span class=\"o\">*<\/span> <span class=\"nv\">$litter2<\/span> <span class=\"o\">+<\/span> <span class=\"nv\">$litter1<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d098e37434c4406be2583\/15-0.png\" alt=\"image.png\" \/><\/div>\n<p>\u5c06999999999\u9664\u4ee52\uff0c\u4f7f\u7528\u5e95\u6570\u51fd\u6570\u8fdb\u884c\u820d\u53bb\uff0c\u5f97\u51fa499999999\u3002[1]<\/p>\n<p>\u8fd9\u6ca1\u95ee\u9898\u3002<\/p>\n<p>\u7136\u540e\u5c06\u5176\u4e58\u4ee599999997\u2026\u2026\u6839\u636e[3]\u7684\u63cf\u8ff0\uff0c\u663e\u7136\u662f\u9519\u8bef\u7684\u3002499999999 \u00d7 99999997\u4e0d\u53ef\u80fd\u4ee5\u8fd9\u6837\u591a\u76840\u7ed3\u5c3e\u3002<\/p>\n<p>\u5f53\u68c0\u67e5[1]\u65f6\uff0c\u53d1\u73b0\u53d8\u91cf\u7684\u7c7b\u578b\u662fdouble\u3002[2]<\/p>\n<p>\u5728\u8fd9\u4e2a\u65f6\u70b9\u4e0a\uff0c\u6709\u4e9b\u4e0d\u5bf9\u52b2\u3002\u4f7f\u7528\u4e86 floor \u51fd\u6570\u8fdb\u884c\u4e86\u622a\u65ad\u3002\u672c\u5e94\u8be5\u5f97\u5230\u6574\u6570\uff0c\u4e3a\u4ec0\u4e48\u662f double \u5462\uff1f<\/p>\n<p>\u6839\u636e\u8bf4\u660e\u4e66\uff0c<br \/>\n\u8fd4\u56de\u4e0d\u8d85\u8fc7 value \u7684\u6700\u5927\u6574\u6570\u503c\uff08\u4ee5 float \u7c7b\u578b\u8868\u793a\uff09\u3002<br \/>\n\u4e3a\u4ec0\u4e48\u662f float \u7c7b\u578b\u5462\uff1f<\/p>\n<p>\u8fd9\u662f\u56e0\u4e3a float \u7684\u8303\u56f4\u6bd4 int \u66f4\u5e7f\u3002<br \/>\n\u2026\u2026\uff1f\uff1f\uff1f<\/p>\n<p>\u6211\u6709\u70b9\u641e\u4e0d\u6e05\u695a\u4f60\u5728\u8bf4\u4ec0\u4e48\uff0c\u4f46\u7531\u4e8e\u4ee5\u6d6e\u70b9\u6570\u7684\u5f62\u5f0f\u8fd4\u56de\uff0c\u6211\u4eec\u65e0\u6cd5\u5f97\u5230\u6b63\u786e\u7684\u6570\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u8f6c\u6362\u4e3a(int)\uff0c\u4f46\u6211\u4eec\u5148\u5b9a\u4e49\u4e00\u4e2a\u8fd4\u56de\u6574\u6570\u7c7b\u578b\u7684\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">function<\/span> <span class=\"n\">ifloor<\/span><span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"nb\">intval<\/span><span class=\"p\">(<\/span><span class=\"nv\">$value<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u8fd9\u6837\u505a\uff0c\u6211\u4eec\u80fd\u591f\u5f97\u5230\u6b63\u786e\u7684\u503c\u3002<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d098e37434c4406be2583\/22-0.png\" alt=\"image.png\" \/><\/div>\n<h1>\u7e3d\u7d50<\/h1>\n<p>\u4f7f\u7528floor\u6216ceil\u65f6\uff0c\u6700\u597d\u6bcf\u6b21\u90fd\u5c06\u5176\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\u3002<\/p>\n<p>\u54ce\u5440\uff0c\u7adf\u7136\u9690\u85cf\u7740\u8fd9\u6837\u7684\u9677\u9631\u2026\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u5728AGC019\u7684A\u9898\u4e0a\u5931\u8d25\u4e86\u3002 \u4f5c\u4e3a\u95ee\u9898\uff0c 0.25\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fQ\u5186\u3001 0.5\u30ea\u30c3\u30c8\u30eb\u306e\u30b8\u30e5\u30fc\u30b9\u306fH [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30901","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728PHP\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3afloor()\u7684\u9677\u9631 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u5728PHP\u4e2d\u6709\u4e00\u4e2a\u540d\u4e3afloor()\u7684\u9677\u9631\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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